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#1
02-19-2010, 09:13 PM
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A little CRT fun
I've been slowly sorting through all my tubes for the last few months and came across some of my CRT collection. I figured it was a great time for a photo so here are most of them. I know a have the little 1" RCA 913 somewhere, but can't find it
 I can't find a few 3" scope CRTs either. Oh well, they've got to be around somewhere.Mostly these are from 'scopes, radar and other specialized test equipment. Some have cool phosphor colors like purple and orange. Then there are the HUGE 12" electrostatic 12FP7 radar tubes in the background.  3JP12 orange phosphor  3HP7 magnetic deflection radar tube  5SP7 dual-gun radar tube  Early Japanese CRT  Radial radar CRTs - 3DP1+S2  Infrared night-vision tube from 1952  That got me thinking - the basing and voltage specs is pretty close to a 7JP4  Time to try one out! I'm going to have to make an adapter first. The 6KV needs to be routing out of the socket and out to the ultor.
Last edited by bandersen; 02-20-2010 at 03:35 AM. 
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#2
02-19-2010, 09:29 PM
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Cool tubes - I'll have to try and find my photos of TV on a green-phosphor Oscilloscope. My brother and Dad got to messing with a scope one night and did the ol' X-Y-Z hookup and watched M*A*S*H on an oscope screen. Yep, it was a monchrome set, but their utilities were green!
I'd love to get my hands on the later F/A-18 Multifunction Display CRT - high def color in a aircraft cockpit! Mind you, I've only seen what the PITA  video test station generated for video on one, but man, it is sharp! Cheers,
__________________
Brian USN RET 22YRS (Avionics/Cal) CET-Consumer Repair and Avionics ('88) "Capacitor Cosmetologist since '79" When fuses go to work, they quit!
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#4
02-19-2010, 09:46 PM
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Cool - I've heard you could do that with a a scope but never tried it.
Quote:
 Here are some more early CRTs I'd love to add to the collection  6-gun tube  Potentiometer tube and a 10-gun tube  
Last edited by bandersen; 02-19-2010 at 09:50 PM.
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#5
02-20-2010, 03:04 AM
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Here's what a 7VP1 looks like
  Here's what that big 12FP7 looks like. I couldn't find exact data on it so I did the best I could with an adapter.  
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| Audiokarma |
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#6
02-20-2010, 04:44 PM
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CRT collector: someone who is happy to find a bottle, and elated when there is nothing in it.
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#7
02-20-2010, 09:42 PM
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I know where a bunch of the radial radar crts are. I wasn't sure what they were for, and they were of no use to me, so I left them behind when the owner was trying to give them to me. Was this a mistake?
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#8
02-20-2010, 11:24 PM
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Quote:
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#9
02-21-2010, 06:35 AM
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I woulda got 'em "Just Because". But did I ever tell y'all I'm a World-Class packrat ?!? I could fill up the Vehicle Assembly Building w/"stuff" I collected....I'd like to have One of Everything that was Ever Made...(grin)
__________________
Benevolent Despot
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#10
02-21-2010, 02:07 PM
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I used to use an Apple /// computer monitor (P1 green phosphor) with an TV tuner for analog TV DX.
The longer persistence of the P1 phosphor greatly reduced the "snow" on the screen, allowing me to see the video (including addresses, telephone numbers, and call letters) on weak signals, especially UHF by "tropo".
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| Audiokarma |
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#11
02-21-2010, 04:08 PM
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What would six- or ten-gun CRTs be used for, anyhow? Some kind of super-duper radar?
Phil Nelson
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#12
02-21-2010, 04:39 PM
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Quote:
http://en.wikipedia.org/wiki/Nimo_tube Here's a mini version in action: http://mcnally.cc/clock.htm
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#13
02-21-2010, 05:15 PM
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Must . . . have . . . Nimo clock!! Suddenly my beloved Nixie clock doesn't seem so cool any more.
Phil
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#14
02-21-2010, 05:27 PM
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I remember seeing somewhere that somebody had made a CRT clock outta a late '40s 7" TV...it was Tres Cool... IIRC, there was some reason it couldn't/wouldn't work as a TV, but it did fine displaying the numerals for the clock...
__________________
Benevolent Despot
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#15
02-21-2010, 06:22 PM
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Quote:
 What a complicated way to display a digit! I bet finding 4 of these guys to make the HH:MM is going to be a real challenge.
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| Audiokarma |
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